Full movie description "Doctor Who New Earth":

The Doctor and Rose set out on their first adventure together since the Doctor regenerated. The Doctor takes Rose to see the Planet New Earth, colonized by the human race since the destruction of the original planet Earth. On arriving the Doctor receives an invitation to visit a hospital run by the sisters of plenitude. A sisterhood of cat-women nuns who have the uncanny ability to cure so many long thought incurable diseases. But as the Doctor and Rose discover there is a sinister method as to how the Sisterhood manage to develop such cures. While unknown to them both an old enemy thought to be deceased, awaits the Time lord and his companion.

Reviews of the Doctor Who New Earth

When Eccleston left the role I was afraid that the chemistry between Rose and the Dr. would evaporate. David Tenant has actually picked up where Eccleston left off and has brought Ecclestons' wide eyed wonder to the role.

I am very pleased that they are bringing back aliens from the second episode of the first season. The writers are doing an excellent job.

I don't want to spoil too much, but it is also established that Rose is attracted to the "New New" doctor thanks to the mind invasion of Cassandra. This one is worth a watch and I believe that David Tenant will be a strong actor in the role of the Doctor.